Electric sad-iron.



PATENTED JAN. 7, 1908.-

W". J. BARR. ELECTRIC SAD IRON. APrucAnon Plum Y 27. 1001;

F 6 m Mon 1...; AITOBNEYS v 55 rests uponthe bottom of the said chamber UNITED STATES PATENT oFFioE;

WILLIAM J.- BARR, or CLEVELAND, OHIO.

ELEGIRIC SAD-IRON.

To all whom it my concern:

Be it known that 1, WILLIAM J. BARR, a citizen of the United States of America, re-

siding at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Electric Sad-Irons; and "I hereby declare the. following to be a full, clear, and exact description of'the invention, such as will enable others skilled in the art-to which it pertains to make and use the same.

This invention relates to improvements in electrically heated sad-irons. v l

The primary object of this invention is to prevent overheating of the body of the sadiron.

l 7 Another object is to automatically interrupt the electric circuit comprising the electroheating resistance in the heated sad-iron body through the medium of a suitably supported calorically expansible member arranged and adapted to be heated and caloric- "ally expanded by and during the heating of to a predetermined extent e operationof the electro-* "the sad-iron-bodi by and during t heating resistance.

7 With these objects in view, and to the end of realizing other advantageshe'reinafter ap caring, this invention consists in certaln eatures of construction, and combinations of parts, heremafter described, pointed out pin the claims and illustrated in the accompanying drawings.

In the said drawings, Figure 1 is a longi tudinal. se'ction .ofan electric sad-iron embodying-my invention. Fig. 2' is a vertical section on line'2-2, Fig. 1, looking'oUtof-"the'sad-iron and corresponds with Fig. 1,

wardly. Fig. 3. is 'a horizontal' section .on

line-3+3, Fig. 1, lookingdownwardly;

4 is 'a section taken through the rear portion.

except that; Fig. 4 illustrates the operation e calorically expansible memberarranged within the bottom of the sad-iron body. 5 a horizontal section on line 3 5- 5, lookin downwardly.

" Referring to the awi lnfis, .A: indicates the body of the sad-iron. e body A is rovided interiorly with a chamber. A'. e

. tends longitudinally-of the Sad -iron far enough to accommodate the location therein 9 chamber A extends' from a short-- distance above the under" s'ui'face' of the sad-ironbody'to thetop of the sadiron-body and ex of the electroheating" resistance C. which Specification of Letters Patent.

Application filed Kay 27. 1907. Serial No. 375.921

Patented Jan. 7,1908.

and is constructed or formed in any approved manner and employed in' heating the sad-iron-body and consequently the bottom or ironing surface of the sadiron-body.

. The hody h is provided with a top a which is composed of asbestos or other material v B represents the handle of thesad-iron. i

which is a good nonconductor of heat The.

top a is secured to the body by suitably applied screws D.

The handle B is removably secured to the top a by two screws E which are-shown in are attached to the rear'end'of the sad-iron body and electrically insulated in any approved manner, as at I, from the sad-ironbody, and opposite terminals L and 1 of the electroheating resistance "C are electrically connected and suitably attached to the posts" K and k respectively. Thejbinding comprises a screw extending-throng but" electrically insulated from the rear wall of the'chamber A and provided externally oh the rear end-0f the sadironbody with a head k which forms a stationary contact which is arranged to be straddled and electrically en 1 gaged-by a movable forked contact'm comlprising two laterall V .which projectand verge-toward the sta The movable contact-m spring'ymembers" 17!.

tionary contact k.

is supported in any approved manner from an insulating body 10 of porcelain or ma} terial which is a good nonconductor of elec-'- tricity; The insulating body 10 constitutes a member of a holder which bearsthe'contact m, which holder comprises'not onlysaid insulating body I or contact bearing member 1 (),but another-insulated body 12 arranged between the insulating, body 10 and the sad-iron-bofdy, and both insulatingibodies 'IOQ'a'nd 1'2 recessed in their opposite sides, as? at 13, as" requiredto accommodllfi I i he extension of the wire h tbtbefimvtble contact m with which the said is 0100- =trically,connected, as at holder the movable contact m not only com rises the twoiinsulatin bodies 10 and 12 ut a metal casin 15 w 'ch embraces the said insulating bo ies and holds the latter together, and the two insulating bodies 10 and 12 and the surrounding casing 15 are secured togetherby a suitably applied screw 16 which is screwed into a flat spring P which depends between the contact-holder and the rear end of the sad-iron-body and is provided at its upper end with an inwardl projecting arm P which extends forward over the rear portion of the sad-iron-bo y and is inter-f posed between the rear. end of the handle B and the top a of the sad-iron-body.

It will be observed that the wire H is continually in electrical connection with the bindin post K and consequently with the electro eating resistance C; that during the heating of the sad-iron-body the wire it is in electrical connection with the said electroheating resistance through the medium .of the movable contact m and the relatively stationary contact k" of the binding ost k,

the inner extremity of its range of move ment holds the contact m in electrical connection with the resistance C and at the outer extremity of its said range of movement holds the said contact out of electrical connection with the said resistance; that the contact-holder-supporting spring P is under A tension when the contact-holder is in its inner position holding the contact in electrical connection with the resistance, and that the said sprin therefore acts to hold the said contact-ho der in position holding the said contact out of electrical connection with the resistance. In Fig. 1 the movable contact m'is shown swung pr actuated into electrical connection with the resistance C against the action of the spring P and closing the electric circuit comprising the said resistance; .In Fig. 4'

the contact m 'is shown s or actuated out of electrical connection with the resist- Means instrumental in retaining the holder c the movable contact m in position hol the said contact in electrical connection with the resistance U are provided 7 and arranged rearward of the sad-iron-body, and the said retaining means referably comprise'a rearwardly or outwardly facing shoul- 18 which is formed under the insulating body -zontally and transverse ,tremity of the sad-iron-body and the rod is of the sad-iron-body by and during 0 eration of the resistance; that the latch R der 17 formed on the casing 15 and a (pivotally sup orted latch R borne by the sa -ironbody. he shoulder 17 is formed by the rear side of an upwardly projecting member 10 and on the casing 15, and the latch R projects rear-wardly to and over the projecting member 18 and has a project' member 20 overlapping the aforesaid shoul er in the operative position of the latch, as shown in F1 1. 4 %he' latch R-is shown 1pivoted to and horiy of the lower portion ofthe sadiron-b0 dy, as at r, at the rear end and externally of the sad-iron-body. The latch is provided below its axis with a downwardly projectin arm R which in the operative position of t e latch is engaged at its forward side by the rear or outer end of a calorically expansiblerod or member 2: which is com osed of any suitable calorically ex- "pansib e metal and is arranged lo "tudinally of the 'sad-iron-body. Preferab y therod :2: is arranged within a correspondingly arranged bore 22 formed within the bottom vofthe sad-iron-body and extending) from the rear extremity of the sad-ironody forwardly a suitable distance. The inner end wall 23- of the bore 22 prevents endwise expansion of the rod toward-the forward exonly free therefore to expand endwise rearwardly as required tmactuate the latch'R,;.- into its inoperative position illustrated in Fig. {i wherein the rojecting member 20- of the latch is shown lifted out of e ement with the shoulder 17 of the casing o t e contact-holder. It will be observed therefore that the rod cc constitutesa suitably suP-- "ported calorically expansible member arranged to be heated by and during the heatthe o the, means instrumental in retaining the movable contact m in 'electn'qtl connection with the resistance is arranged to be rene dered ino rative by the calorical expansion of the caorically expansible "member to a predetermined extent. It be observed. also that the calorical expansible member is arranged externally of the resistance where it'is convenientl applied; that the said caloricall expansi le member is arranged within the ottom of. the sad-iron-body without 4 120 that the said cainterfering with the exterior and iro s'ur-,

faceof the sad-iron-body; loricall expansible mem er is applied within the sa -iron-body.'and under t nection with the location shown of themeans instrumental in retainingthe contact in elec tl'ical connection with the resistance; that I the means instrumental in retaining the movable contact at in electrical connection with the resistance is arranged externally and 130 eresistancef where it is more especially convenient in con- 1 heat; that the spring is inexpensively attached to the contact-holder-casing 15 and acts to actuate the said casing and contents in the direction required to render thecontact m inoperative; that the member 18 of the said casing and the latch R constitute two cooperating members which are inter locked in the operative position of the latch and instrumental in holding thesaid casing and consequently the contact m in the circuitfclosin orioperative position of the said contact.

hat I claim is 1. The combination, with the body of a sad-iron an electroheating resistance adapted to participate in the formation ofan electric circuit and arranged to heat the said body, and a suitably supported mo'v able contact adapted to participate in the formation of the. said circuit and electrially connected or out of electrical connection with the resistance according as the contact is. in the one or the other of its positions, of a suitably supported calorically expansible member arranged to be heated by and during the heating of the sad-iron-body by and during the operation of the resistance, and means instri mental in retaining the contact in electrical connection with the resistance and arranged to be renderedinoperative by the calorical expansion of the calorically expansible member to a predetermined extent.

2. Thecombination of'the body of a sadiron; an electroheating resistance adapted to participate in the formation of an electric circuit 'and'arranged within and instrumental in heatin the said body; a suitably supported'mova le contact adapted to partici-' pate inthe formation of the said circuit and 'electricall connected or out of electrical connection with't'he resistance according as the contact is in the one or the other of its positions; a suitably supported calorically exjpansible member arrangedexternally of the -resistance' andadapted to be heated'by and the heating of the sad-iron-body by and 'uring theioperation of the resistance,

and means instrumental iii-retaining the conltact-m electrical connection with the resist and arranged to be rendered I inoperative by the calorical expansion of the calorically expan'sible member to a predetermined extent. i

3. The combination, with the body of a sad-iron; an electroheating resistanceadapted to participate inthe formation of an electric circuit and. contained within and instrumental in heating the said body, and a suitably supported I11()"-.'%1.l)l6 contact adapted to participate in the formation of the said circuit and electrically connected or out of electrical connection with the resistance accordmg the con-tact is in the one or the other of its positions, of a suitably supported caloric-ally expansiblc-member applied'witl'iin the SiMl-llOlkbOtl) and adapted to be heated by and during the heating of the sad-ironbody by and during the operation of the resistance, and means instrumental in retaining the contact in electrical connection with the resistance and arranged to be rendered inoperatix e by the calorical expansion of the calorically expansible member to a predetermined extent.

4. The combination, with the body of a sad-iron; a-suitably applied electroheating resistance adapted to participate in the formation of an electric circuit and arranged to heat the said body, and a suitably supported movable contact adapted to participate in the formation of the said circuit and electrically connected or out of electrical connection with'the resistance according as the contact is in the one or the other of its positions, of a suitably supported calorically expansible member applied within the sadiron-body and under the resistance and adapted to be heated by and during the heating' of the sad-iron-body by and during the operation of the resistance, and means instrumental in retaining the contact in electrical connection with the resistance and arranged to be rendered inoperative by the calorical expansion of the calorically expansible member to a predetermined extent.

The combination, with the body of a sad-iron; anelectroheating resistance adapted to participate inthe formation of an electric circuit and'arranged to heat the said body, and a suitably supported movable COD: tact adapted to participate in the formation of the said circuit and electrically connected or out of electrical connection with the resistance according as the contact is in the one or the other of its positions, ofa suitably supported calorically expansible rod arranged to be heated by and during the heating of the aforesaid sad-iron-bOdy by and during the operation ofthe resistance and applied as required to accommodate the caloric-a1 expansion of the rodcndwise, and means instru- .mental in retaining-the contact in electrical connection with the resistance and arran ed to be rendered inoperative by the calorlcal expansion of the rod endwise to a predeternined exten. Y

e. The combination, with the body of a Sadiron; an electroheating resistance arranged to heat the said body, and a suitably supported movable contact electrically connected or out of electrical connection with the resistance according as the contact is in the one or the other of its positions, of a suitably su orted calorically expansiblc rod arrange iongitudinally of the sad-iron-body and in' position to be heated by and during the operation of the resistance, said rod beappliedas required to accommodate the ca orical expansion of the rod endwise, and means instrumental in retaining the contact in electrical connection with the resistance and arranged to be rendered ino erative by the calorical expansion of the ro endwise to a predetermined extent.

7 7. The combination, with the body of a sad-iron; an electroheating resistance adapted to participatein the formation of an electric circuit and arranged within and instrumental in heating the said body, and "a suitably supported movable contact adapted to participate in the formation ,of the said cir-- cuit and electrically connected or out of electrical connection with the resistance according as the contact is in the one or the other of its positions, of'a suitably supported calorically expansible rod applied within thebody as required to accommodate the calorical expansion of the rod endwise by and during the operation of the resistance, and- "means instrumental in retainin the contact in electrical connection with t e resistance and arranged to be rendered inoperative by. the calorical expansion of the rod endwise to a predetermined extent. a

' 8. The combination, with the body of a sad-iron; an electroheating resistance adapted to participate in the formation of an electric circuit and arranged within and instrumental in heating the said .body, and a suitably supported movable contact adapted to participate inthe formation of the said circu-it and electrically connected or out of electrical connection with the resistance according as the contact is in the one or the other of its positions of a suitably su ported calorically expansible -rod arranged under 'the resistance and longitudinally of the sadiron-bddy, said rod being applied as required to accommodate the calorical expansion of the rod endwise by and during the operation of the resistance, and means instrumental in retaining the contact in electrical connection with the resistance and arranged to be ren-. dered inoperative by the calorical expansion of the calorically expansible rod endwise to a predetermined-extent. j 9. The combination, with, the body of a sad-iron; an electroheatingresistance adapted to participate in the formation of an electric circuit and arranged within-and instrumental in heating the said body, anda suitably supported movable contact adapted to participate inthe formation of thesaid circuit and electrically connected or out of electrical connection with the resistance'ac-. cording as the contact is in the one or the other ofits positions, of a suitably supported calorically expansible rod which is arranged L longitudinally of the sad-iron-body and in position to be heated by and during the o eration of the resistance, said rod being 0 y free to calorically expand endwise rearwardly relative to the sad-iron-body, and means instrumental in retainin the.contact in electrical connection with t e resistance and arranged to be rendered inoperative by the calorical expansion of the rod to a predetermined extent. r I

10. The combination, with the body of a sad-iron; an electroheating resistance adapted to participate in the formation of an electric circuit and arranged within and instrumental in heating the said body, and a suit ably supported movable contact adaptedto participate in the formation of thesaid circuit and electrically connected or out of electrical connection with the resistance ac' cording as the contact is in the one or the other of its positions, of a suitably supported calorically .expansible member arranged to be heated by and during the operation of the resistance, and means arranged externally of the sad iron-body and instrumental in retaining the contact in electrical connection with the resistance'and arran ed to be rendered ino erative by the calorical expansion of the ca orically expansible member to. a predetermined extent.

11. The combination, with the body of an. electric, sad-iron; an electroheating resistance adapted to participate in the'formation of an electric circuit and arranged within and instrumental in heating the said body, and a suitably supported movable contact adapted to participate in the formation of the'said circuit an electrically connected or out of electrical connection with theresistance according as the contact is in the one or the other of its positions, of a caloricall expansible member borne by the sad-ironody and arranged to be heated by and during the operation of the resistance, and means arranged externally of the sad-iron-body and 116' instrumental in retaining the contact in electrical connection with the resistance arranged to be rendered inoperative by the calorical expansion of the calorically expansible member to a predetermined extent.

'12. The combination,.with the body of an electric sad-iron, said body being provided with an interior chamber, and an electroheating resistance ada ted to participate in the-formation of an e ectric circuit and arranged within the said chamber-and instrumental in heating'the sad-iron-body, and a suitably supported movable contact adapted 'to participate in the. formation of the said circuit and electrically connected or out of electrical connection with the resistance according as the contact is in the one or the other of its positions, of a calorically expansible rod arranged within the bottom of the. said chamber andlongitudinallyof the sad iron-body, said rod extending to the rear end of the sad-ironebody and being only free to calorically expand endwise and rearwardly relative to the sad-'iron-body by and duringthe operation of the resistance, and

means instrumental in retainin the contact .m elec rical connection with t e ,IBSlStflIlCG and arranged to be rendered inoperative by the calorical expansion of the rod endwise to a predetermined extent.

133. The combination, with the body of an electric sad-iron, and an electric resistance 1 adapted to participate in the formation of,

adapted to participate in the formation of an electric circuit and arranged Within and instrumental in heating the said body, and a suitably supported movable contact ar-- ranged externally of the sadiron-body and the said circuit and electrically connected or out of electrical connection with the resistance according as the contact is in the one or the other of its positions, of a calorically exansible member supported from the sadiron-body and arranged to becalorically expanded by and during the operation of the resistance, and means instrumental in re-" tainin the contact in electrical connection I 'with't he resistance and arranged to be rendered inoperative by the calorical expansion of the calorically expansible member to .a.

. predetermined extent.

14. The combination, with the body of an electric sad-iron, and an electroheating resistance adapted to participate in the formation of an electric circuit and instrumental in heating the said body, and a movable contact a'daptedto participate-in the formation of the-said circuitand electrically connected or out of electrical connection with the resistance accordingas the contact is in the one or the other of its positions, of a suitably supported member bear' the contact and movable as re uired to s tthe' contact out of or into electricalconnection with the resistance; a calorically expansible member borne by the sad-iron-body and arranged to be heated during the operationof the electroheating re- 1 sistance, and means which is not only instruthe contact-bearingmemmental in holding ber. in the posit on required to electrically connect the contact-with the resistance but arrangedto be rendered inoperative by. the calorical expansion of the calorically expansible-member-to a predetermined extent.

15. The combination, with the-body of an electric sad-iron, and an electroh'eatmg re-' sistance adapted'to participate in the forma v tion of an electric circuit and instrumental in heatin the said body, and a movable contact a' apted to participate in the formation of the said circuit and electrically connected -or out of electrical connection with the resistance according as the contact is in the one or the other of its positions, of a suitably supported member bearin the contact and movable as required to shii t the contact out of or into electrical connection with the resistance; a' suitably supported calorically expansible member arranged to be calorically expanded by and during the operation of the resistance; means which is not only instrumental in holding the contact-bearing member in the position required to -electrically connect the contact with the resistance but arranged tobe rendered inoperative by the calorical' expansion of the calorically expansible member to a predetermined extent, and means acting to retain. the contact-bearing member in position holding the contact out of electrical connection with the resistance.

16. The combination, with the body of an electric sad-iron, andan 'electroheating resistance adapted to participate in the formation of an electric circuit and instrumental in heatin the said body, and a movable con tact a apted to. participate inthe formation of the said circuit and electrically connected or out of. electrical, connection with the reerative by the calorical expansion of the calorically expansible member to, a predetermined extent, and a suitably applied spring acting to retain the contact-bearing member in position holding the contactout of electrical connection with the resistance.

17. The combination, with the body of an electric sad-iron, an electroheating resistance adapted to participate in the formation of an electric circuit and instrumental in; heating the said body, and a movable contact adapted to participate in the formation of thesaid' circuit and electrically connected or out of electrical'connection with the resistance according asthe contact'is in the one or the other of its positions, ofasuitably supported member bearin the contact and movable as required to shiit the contact out of or into electrical connection with the resistance; a suitably supported calorically expansible by and during the operation of the resistance; means which is not only instrumental in holding the contact-bearing member in the -member arranged to be calorically expanded 65 the calorical expansion'of the calorically exposition re uired to electrically connect the contact wit the resistance but arranged to be rendered inoperative by the calorical expansion of the calorically expansible member to a predetermined extent, and a spring attached to the sad-iron-body and acting to retain the contact-bearing member in position holding the contact out of electrical connection with the resistance. I

18. The combination, with the body ofan electric sad-iron an electroheating resistance arranged Within the said body and adapted to participate in the formation of an electric circuit, and a movable contact. adapted to participate in the formation of the said circuit and in its operative position being electrically connected with a terminal of the resistance and thereby closing the circuit, of a suitably su ported member bearing the said.

contact an movable as required to actuate the contact out of or into electrical connection with the resistance ;'a calorically expansible member borne by the sad-iron-body and arranged to be heated by and during the operation of the resistance; means instrumental in lockin or holding the contactbearing member 1n the circuit-closing posi ,tion of the contact and arranged to be rendered ino erative by the calorical expansion of the ca orically expansible member to a predetermined extent, and means acting to actuate the contact-bearing member in the direction required to render the contact inoperativ 19. The combination, with the body of an electric sad-iron an electroheating resistance arrangedwithin the said body and adapted to participate in the formation of an electric circuit, and a movable contact arranged externally'of the sad-iron-body and adapted to participate in the formation of the said circuit and in its 0 erative position electrically 4 connected with t e terminal-of theresistance contact out of or into electrical connection with the resistance; a calorically expansible member arranged within the sad-iron-body and position to be heated during the oper-.

ation of the resistance; means instrumental in holding'the contact-bearing member in the-circuit-closing position ofrthe contact and arranged to be rendered. inoperative by pansible member to a predetermined extent,

and means acting to actuate the contactbearing member in the direction required to render the contact inoperative. 20. The combination, with the body of'an electric sad-iron; an electroheatingresistance sible membervto afpredeterminedextent;

arranged to heat the said body and adapted to participate in the formation of an electric circuit, and a movable contact adapted to 'ternally of the sad-.iron-body participate in the formation of the said cir cuit and electrically connected or out of elecically expansible member to a predetermined extent.

21. The combination, with the body of an electric sad-iron; an electroheatin resistance arranged within and instrumenta in heating the said body and adapted to participate in.

the formation of an e ectric circuit, and a movable contact arranged externally of the sad-iron-body and adapted to partici ate in the formation of the said circuit and e ectrically connected or out of electrical'connection with the resistance according as the contact is in the one or the other ofits positions, of a'spring attached to the sad-iron-bod and bearing the contact and acting to ho d the contact out of electrical connection with the resistance; asuitably applied calorically expansible member arranged to be'heated by and during the operationof the resistance,

and means instrumental in retainin the contact in electrical connection with t e resistance and arranged to be rendered inoperative by the calorical expansion of the calorically expansible member to a predetermined extent. a

22; The combination, with'the body of an electric sad-iron, said body having a top composed of material which is a good non-conductor of heat; an electroheating resistance arranged within. the said body and adapted .to participate in the formation of an electric circuit, and a movable contact arranged exto participate in the formationof the said circuit and electrically connected or out of electrical, connection with the resistance according as the contact-is in the'one or the other of its positions, of a sprin attached to the aforesaid to and bearing t e contact and acting to holr the contactout of electrical connection with the resistance; asuitably ap lied calorical] arrange tobe. heate by andduring the operation of the resistance,,.and means instrumental in retaining the contactin electrical connection with the resistance and arranged to be'ren'dered ino and adapted expansible member rative' by the calorical expansion of the .ca orically expan- 1 electroheating" redst applied calorically expansible member ar' ranged to be heated by and during the operation of the resistance, and means instrumental in retaining the contact in its inner position and arranged to be rendered ino )erative by the calorical expansion of the calorically expansible member to a predetermined extent.

24. The-combination of the body of an electric sad-iron; an ,electroheating resistance arranged to heat the said body and adapted to participate in the formation. of an electric circuit, and a suitably sup orted movable contact arran ed rearwan and movable from and towar the rear end of the sad-iron-body and adapted to partici ate in the formation of the said circuit and e ectrically connected or out of electrical connection with the resistance according as the contact is at the one or'the other extremity of its range of movement; means acting to retain the contact out of electrical connection with expansible member arrange to be heated by and means instrumental in retaining the contact in electrical connection with the resist- 'ance and arranged to be rendered -1nopera- 40 tive by the calorical expansion of the caloricallyexpansible member to a predetermined i tion with the resistance according as the con- 25. The combination of the body of an.

extent.

electric sad-iron I an electroheatingresistance arranged" to heat the said body and adapted to participate in the formation of an electric circuit, and a movable contact arranged externally of the sad ironbody and,

supportedas required to render it capable of being swung towardor from the sad-ironbody, said contact bein adapted to participate in the formation 0 the said circuit and electrically connected or out of electrical connection with the resistance according as the contact is at the inner orouter extreniityof its range of movement; a" caloricall expansible member arranged to be heate by and during the operation of the resistance, and means instrumental in retaining thecontact in electrical connection with the resistance, said retaining means being arranged to be rendered inoperative bythe calorical expansion of the calorically expansible member to a predetermined extent and thereby rendering the contact free to be swungoutwardly.

I the resistance; a suitably applied calorically.

and during the operation of the resistance,

26. The combination, with the body of an electric sad-iron; an electroheating resistance arranged to heat the said body and adapted to' participate in the formation of an electric circuit; a contact adapted to participate in the formation of the said circuit, and

' a suitably supported movable contact-holder comprising a body of insulating material which bears the contact and is embraced and borne by a casing, said contact-holder holding the contact in .or out of electrical connection withthe resistance according as the contact-holder is at the one or the other extremity of its range of movement, of a suitably applied calorically expansible member arranged to be heated by and during the operation of the resistance, and means instrumental in retaining the contact-holder in position helding the contact in electrical connection with the resistance, said retaining means comprising two cooperating members which are interlocked in-the lastrnientioned position of the contact-holder, said cooperating members being supported the one independently of and movab e relative to the other which is formed on the aforesaid casing and. the formerbeing arranged to be actuatedand thereby rendered inoperative by the calorical expanison of the calorically expansible member to a redetermined extent,

27. Tlie combination, with the body of an electric sad-iron; an electroheatingresistance arranged to heat the said body and adapted to participate in the formation of an electric circuit; a contact adapted to participate in the formation of the said circuit, and a suitably supported movable contact-holder comprising a body of insulating material which bears the contact and is embraced and borne by a casing, said contact-holder holding thecontact in or out of electrical connectact-holder is at the one or the other-extremity of its range of movement, of a suitably applied calorically. expansible vmember arranged to beheated by and during the operation of the resistance, and means instrumental in retaining the contact-holder in position holding the contact in electrical con nection with the resistance, said retaining means comprising an outwardly facing shoulder formed on the aforesaid casing and a suitably su ported pivotal latch borne by the csad-iron odyandh having a rojecting vmember overlapping the aforesan shoulder in the o erativeposition of the latch, said latch being arranged to be actuated into its inoperative position by the calorical expansion of the calorically expansible member to a predetermined extent. I

j 28. The combination, with the body of an electric sad-iron; an electroheating resist- "ance arranged'to heat the said body and adapted to participatein the formation of an electric circuit, and a contact arranged externally and rearwardly of the sad-ironbody and adapted to participate in the formation of-the said circuit, of a suitably supported contact-holder arranged rearward of and movable outwardly from and inwardly toward-the, sad-iron-body, said contact-holder holding'the contact in or out of v electrical connection with the resistance according as the contact-holder is in its inner or outer position; a suitably applied calorically expansible member-arranged to be heatediby and during the operation of the resistance, and means instrumental in retaining the contact-holderin its inner posielectric sad-iron; an electroheating resistance arranged to heat the said body andadapted to participate in the formationof an electric circuit, and a contact adapted to .partici ate in the formation of the said cir cuit, o amovable contact-holder comprising a body of insulating material which bears the contact and is embraced and borne bya casing, said contact-holder holding the contact m or out: of electrical'connection with the resistance according as the contactholder is at the one or the other extremity of its range of movement, of a suitablysupportedspring bearing the aforesaid casing andactin to hold the contact-holder in position holding the contact out of electrical connection with the resistance; a suitably applied calorically expansible member arranged to be heated by and during the operation of the resistance, and means instrumental in retaining the contact-holder in position holding1 the contact in'electrical connection with t e resistance, said retaining means being arran ed to be rendered inoperative by the ca orical expansion of the calorically expansible member to a predetermined extent.

30. The combination, with the body of an electric sad-iron; an electroheating resist ance arranged -to heat the said body and adapted to participate in the formation of an electric circuit,- and a contact arranged externally and rearwardly of the sad-iron-body and adapted to participate in the formation of, the said circuit, ofa contact-holder movable outwardly from or inwardly toward the sad-iron-body and comprising a body of insulating material which bears the contact and is embraced and borne by a casing, said contact-holder holding the contact in or out of electrical connection with the resistance according as the contact-holder is in its inneror outer position; a suitably supported spring bearing the said casing and acting to hold the contact-holder in its outer position; a suitably applied calorically expansible memberarranged to be heated by and during the operation of the resistance, and

means instrumental in retainin the contactholder in its inner position an 7 arranged tobe rendered inoperative by the caloric'al exspecification, the presence of two wit- DOSSGS.

G. H. DORER, B. C. BRow v, 

